Invitations and Save the Dates

Email invites are fine but i would be mindful that you might need paper invites anyway for older folks who aren't tech savvy.

You can send them via paperlesspost.com but be aware that some guests (older and younger equally) won't consider it official until/unless they receive a paper invite in the mail. A save the date can be sent via email easily. But people still expect a paper invite for formality.

We saved a ton of money on our STDs by doing a simple postcard - we paid $40 including postage for STDs
Our invites were a little more pricey (but keeping it simple) and with postage including RSVP they came to $80

I’d definitely not do evites for a wedding

I think an email save-the-date is fine, but I would try to find room in the budget for some affordable paper invites for the wedding. It can literally be printer paper in my opinion, it just needs to come in the mail. Definitely no to Facebook for invites, that's the worst option of the three.

Costco.com and annsbridalbargains.com are nice quality full sets for not alot of money.

I suggest doing paperless post, it's a little more formal. For STDs it can just be an announcement, but the invitation should include a link to RSVP, either through paperlesspost or through your wedding website. I wouldn't consider it an invitation unless there was a way to respond with my attendance (or lackthereof).

We did paper save the date and invite but online rsvp and wedding website to save on those little details cards and all that. We got a templette off Etsy for $8 and printed locally from a shop for 50 cents an invite. Plus stamp so each invite was only a dollar and you are only sending to each household not per person. We postponed our wedding and with our 35 person elopement sent out emails and they were very ill received. I received so many emails calls back confused and mentioned that emails were too informal for a wedding. My grandma also couldn’t even open it because she doesn’t have adobe pdf. I think to just go with traditional mail but there are definitely ways to keep it cheap!

I ended up creating mine on Canva.com! They were a hard stock paper invite, and I used the picture from the proposal. I spent $50 on 100 invites.