What problems are you having? Just to add some positive feedback, I have been using Apple Mail (Mac, iPad, iOS) for my 3 Gmail accounts for almost 15 yrs. Approaching 110K emails. No problems at all, although I have proactively reindexed 2-3 times over those 15 yrs.
I am experiencing the same issue on both my iPad (iPadOS 26.x) and my Mac (macOS 26 Tahoe). I have set my business account as the Default Account in Settings → Mail, but Apple Mail does not use that account when I compose a new message inside the Mail app.
On the iPad, Mail automatically selects the account associated with the mailbox that happens to be highlighted in the sidebar, even when I am composing a brand-new message. It ignores the Default Account setting, even though that setting is correct. The line under the Default Account field states that messages created outside of Mail will use that account by default, but Mail is not honoring my selected default within the Mail app itself.
On the Mac, I see a similar problem. When I compose a new message, Mail often chooses the last used or last active account instead of the default account I have set in Mail’s settings.
In both cases, the default-account preference is being overridden based on context or the mailbox I last viewed. As a result, I have to manually correct the “From” field every time I compose a message to ensure the correct account is used.
What is your setting for this option? A majority of my emails are to recipients that I have either sent or received emails in the past. So for example, if I want to send an email to my wife (personal account), but I start it with my business account being the active account, the minute I input her email address, it switches the ‘FROM’ to my personal account.
This happens even if the recipient is someone I’ve only exchanged a few emails with, and it doesn’t seem to matter how recent it is.
This was always the case until the recent update, but Mail is not switching accounts as it should. Consequently, I’ve inadvertently sent business emails from my personal account.
Also something to be aware of that I just experienced. On a recent Gmail web client update, they changed a few things.
The ‘Normal’ font size is a touch smaller now.
Gmail handles what they call ‘soft breaks’ differently.
On the 2nd bullet, when I would get replies, my signature had been affected. Instead of Nick Fulgham…on one line, Gmail detected a ‘soft break’ and it showed
Nick
Fulgham
I am still working with their tech support to figure out how to deal with this. Since I send mail mostly from Apple Mail, I am staying away from sending from Gmail client until solution is determined.
And on a rant: it bothers me tremendously that software suppliers (looking at you, Google and Microsoft), have these frequent updates where they don’t tell you what has been updated or changed, but sometimes the changes are significant and you only find out about them in real-world practice.
FWIW, I manage my email domains, hosted on Google, so I occasionally check The Keyword for feature changes, etc. And I get notifications for changes when I can control if/when some features roll out.
There is also a section for developers that might list things like 'soft breaks" ?
My problem with macOS native email is that there is still no way to enlarge the onscreen text when creating an email without resulting in larger fonts actually being sent to the email recipient.
On large screens, my Intel iMac 27" (when I had it) and now my Mac Studio monitor, the standard font size is much too small.
I don’t want to change the resolution of my entire screen as a workaround (that is too klunky and with LCD displays results in fuzzy images - I paid too much for my Mac Studio monitor to tolerate that :LOL)
I used Microsoft Outlook for the Mac for a long time because they did respond to feedback and add this many years back (I think it was some kind of “View > font size” option, but it has been a while since I have used it).
I ended up dropping MS Outlook for other reasons (stated earlier in the thread).
Yes!! This frustrates me as well. Why does a big company like Apple ignore such an obvious feature? 
At least on the iPad, I can easily solve this with the text size widget I added to Control Center.
I just realized I did not answer your specific question. This is not an option on my iPad and my MBP is at the office. I’ll check this setting on Monday and get back to you.
I would agree with you on this. There are a few other issues I wish Apple would address, i.e. flexible line spacing.
I didn’t mean to say that Apple Mail was great in all areas, just wanted to point out that stability with large amount of emails was not one of my problems. But lack of some features is why I use both Apple Mail and Gmail web, depending on what my use case is.
All of my email domains are also hosted on Google, and I think they for the most part do a great job. I also check weekly for updates (see screenshot). Just that some of these under-the-hood changes they make, they do not consider as features and therefore don’t mention them.
Then you might find this YouTube channel interesting, it has tons of tips and other info:
As promised, I checked my Mac at work. I have “Automatically select best account” selected.
I’ve had good experience with Thunderbird. It reminds me a bit of my earlier Netscape Navigator days for some reason. One of the early contributors to the project has forked it, and named it Betterbird. He incorporates some of the long-standing frustrations that some users have had about TB, and just put it out there with his own fixes. On Linux, I tend to gravitate toward Betterbird now. It’s Extension/bookmark/etc. bit for bit compatible with anything related to TB. Also, I find its iCloud integration to go a bit easier.
Also, the Vivaldi browser has its own email functionality, again similar in principle to what Netscape Navigator did.
I am using MailMaven, which I’m really liking a lot and it has such functionalities in their Preferences. There’s a font size, which is the size of the email as it is sent, and there’s a zoom level.
That setting seems to just work on incoming messages, not outgoing…
Do you mean the zoom setting of reading your sent email on your Sent folder? Just checking it out now on my installation of Mailmaven and it is zoomed to the right level for me.
If you mean the email you sent that someone else received, that should be the font size set in the body of your email as you compose it.
For me, it is being able to zoom to display font size while composing a new outgoing message.
Outlook for Mac was able to do it, but I stopped using Outlook for other reasons.
When I switched to using web browser (Gmail) or browser-wrapped apps (Fast Mail), I can achieve this by zooming the browser display (CMD + and CMD -).
Lots of other negatives to use browser- based email, but I think I mentioned earlier I enjoy the friction and less optimal UI as a forced way to waste less time in email overall and it completely solved my occasional sync problems between systems and removed a large amount of local storage usage, which has been a big benefit in this current age of very expensive SSDs (internal or external)
I am so agreeing with these reasons that I will put forward that in the end native email apps impose more friction than Google’s GMail web interface. Now, Outlook is the exact opposite: you need to use the native app for efficiency.
