Do all email providers ignore periods in front of @?
This is really specific to gmail, but this applies to google apps for domain as well, so you would only be able to do it for @gmail.com I wouldn’t do this, this is only going to alienate your honest users and not prevent anyone determined to create multiple accounts.
Are single quotes legal in the name part of an email address?
Yes, jon.o’conner@example.com is a valid email address according to RFC 5322. From the Email address article at wikipedia (Syntax section): The local-part of the email address may use any of these ASCII characters: Uppercase and lowercase English letters (a–z, A–Z) Digits 0 to 9 Characters ! # $ % & ‘ * + – / … Read more
GMail displays plain text email instead HTML
Try switching the order of the parts of the message, putting the HTML part after the plain-text part. It might work :). NOTE: I cannot remember now where I read this (or if I for sure even did), but the reason switching might help is because I think the preferred part of the message may … Read more
Best practices: Sending email on behalf of users
The on-behalf-of header is the best way to do that, but you are also going to get trapped by spam filters. The best to mitigate or lessen the likelihood that you will end up in the spam filter is to implement all the industry standards around verifying your domain and mail server. As indicated in … Read more
“/usr/sbin/sendmail/” Not found
You need to install the sendmail package on your VPS as well as your local machine. Assuming you use some form of Debian linux, you want to run: sudo apt-get install sendmail on the VPS.
Why write ‘at’ and ‘dot’ in email rather than ‘@’ and ‘.’? [closed]
Typically people do this to avoid having their email addresses found by spambots that search for a regex that matches email address formatting. By using _AT_ and _DOT_, the symbols that the spambot is looking for will not show up on the page, and therefore your email address will not be found. It’s generally good … Read more
Failed to authenticate on SMTP server error using gmail
This will not work as of May 30, 2022 checkout here https://support.google.com/accounts/answer/6010255?hl=en&authuser=6 Thanks @sarout for pointing this out. Did you turn on the “Allow less secure apps” on? go to this link https://myaccount.google.com/security#connectedapps Take a look at the Sign-in & security -> Apps with account access menu. You must turn the option “Allow less secure … Read more
Mailgun: Messages “Accepted” but taking long time to be delivered (or not being delivered)
If this is happening regularly, it is very likely Mailgun has you on one of their low-tier IP addresses. I imagine this is the default for free accounts, since they don’t want to “pollute” their good addresses with new users who may not be serious / legit. You can check the “quality” of the IP … Read more