You can purchase the cheapest & most relevant domain.

It doesn't have to be fancy.

From where? - Namecheap or Godaddy

domains ending with .com or .co are best for email deliverability.

followed by .org > .net > .io domains. ref this.

send a maximum of 50 emails per day per email account

using only 3 or a maximum of 5 emails per domain.

Purchase emails from Office 365.

Office 365 comparatively performs better & smoother than any other ESP.

Custom SMTP providers are not suggested.

When? - before doing anything on the new emails

Use our content guide

Do a/b testing

Use spintax to break the content pattern

Verify emails.

Ideal bounce rate < 5%, but anything over 3% is a red flag.

The ideal size of a cold email is < 60 words.

Ref this post.

Reach out to target people who fit into your client persona(s) & can be your leads.

Throwing an arrow in the dark has never been a good strategy.

Little humor will hit the long road

The subject line shall have between 1 to 3 words. 4 max to max.

Ref this post.

Avoid using emojis in subject lines; it (psychologically) gives marketing vibes.

Links - 1 in an email is fine, but try to avoid using them all.

If a link is a must-have, add it in the second email (follow-up) instead of the first email.

Attachment - a big no

Images / GIFs - fine, but keep it as small as possible in size

Signature - use it without any formatting & links & images

No HTML. only text-based email.

Keep a constant tab on deliverability.

Keep these websites handy & use them consistently: MailGenuis | Mail-tester | MailTrap | GlockApps